Mayor of Arlington, Texas

City Manager, City of Lewisville

Executive Manager of Technical Services and Basin Planning, Trinity River Authority, Arlington

Chief of Water Resources, US Army Corps of Engineers, Fort Worth District

Associate Principal and Technical Director, Water for North America in Arup

Director & Distinguished Professor-University of Arkansas Community Design Center, Steven L. Anderson Chair in Architecture and Urban Studies

Texas State Climatologist, Texas A&M University

Fund Development Coordinator, River Legacy Living Science Center

Executive Director, Streams & Valleys, Inc.

Associate Program Director, National Science Foundation